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Construction method of post-hammer and post-hammer rammed expanded pile composite foundation
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A construction method and composite foundation technology, which is applied in infrastructure engineering, drilling equipment and methods, earthwork drilling and mining, etc., can solve problems such as inability to fill in compaction, and achieve the effects of convenient construction, reduced voids, and strong bearing capacity
Active Publication Date: 2021-01-15
北京航天地基工程有限责任公司
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Problems solved by technology
[0005] The purpose of the present invention is to provide a column hammer to solve the technical problem in the prior art that the traditional column hammer cannot tamp the filler when the grouting pipe is in the hole
Method used
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Embodiment 1
[0069] Such as Figure 5 As shown, the construction method of a column-hammer rammed and expanded pile composite foundation provided in this embodiment includes:
[0070] Step S101, disassembling the column head 2 from the hammer body 1;
[0071] Step S102, placing the grouting pipe 3 in the hole;
[0072] Step S104, adding filler into the hole and tamping the filler in the hole through the hammer body 1 .
[0073] The specific operation process is as follows:
[0074] In step S101 of disassembling the column head 2 from the hammer body 1 , fix the hammer body 1 , and use a torque wrench or other auxiliary equipment to disassemble the column head 2 from the hammer body 1 . Subsequently, step S102 is performed to place the grouting pipe 3 in the hole, and the upper end of the grouting pipe 3 should leak 1-2m above the ground. In step S104, adding filler to the hole and tamping the filler in the hole through the hammer body 1, you can first add part of the filler into the ho...
Embodiment 2
[0076] Such as Figure 6 As shown, the construction method of a column-hammer rammed and expanded pile composite foundation provided in this embodiment includes:
[0077] Step S101, disassembling the column head 2 from the hammer body 1;
[0078] Step S1021, passing the grouting pipe 3 through the through hole 11;
[0079] Step S1022, placing the hammer body 1 and the grouting pipe 3 together in the hole;
[0080] Step S103, taking out the hammer body 1 in the hole;
[0081] Step S104, adding filler into the hole and tamping the filler in the hole through the hammer body 1;
[0082] Step S105, inject grout into the hole through the grouting pipe.
[0083] The specific operation process is as follows:
[0084]In step S101 of disassembling the column head 2 from the hammer body 1 , fix the hammer body 1 , and use a torque wrench or other auxiliary equipment to disassemble the column head 2 from the hammer body 1 . In step S1021 , the grouting pipe 3 is passed through the t...
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Abstract
The invention provides a column hammer and a construction method of a composite foundation through a column hammer rammed-expanding pile, and relates to the technical field of building construction. The column hammer comprises a hammer body and a column head which is detachably connected with the bottom end of the hammer body, and the hammer body is provided with a through hole for allowing a grouting pipe to penetrate through. When the grouting pipe is located in a hole, the through hole of the column hammer can allow the grouting pipe to penetrate through, thus the hammer body can still compact fillers layer by layer, damage of the hammer body to the grouting pipe is avoided, and gaps between the fillers before grouting are effectively reduced, so that the foundation is firmer and higherin bearing capacity.
Description
technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for a post hammer and a post hammer rammed and expanded pile composite foundation. Background technique [0002] With the development of the city, the former brick factories and gravel factories are gradually moving away from our sight, and the remaining borrow pits are generally used as construction waste landfills. With the continuous expansion of the urban area, these construction waste landfills The buried site is also used as a construction site. [0003] Before building a building, the foundation needs to be treated to enhance the bearing capacity of the foundation. People usually use the post-hammer ramming pile expansion method to deal with foundations such as sandy soil, silt soil, cohesive soil and artificial filling. The traditional column hammer ramming pile expansion method is to raise the column-shaped weight to a certain height ...
Claims
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Application Information
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